#### SBI PO Exam Quantitative Aptitude Study Material

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b) Rs. 1200

c) Rs. 3600

d) Rs. 4800

b) 3:2

c) 1:1

d) 3:1

b) 78

c) 65

d) 13

⇒ 12+6x = 25+5x ⇒x=25-12 =13

b) 18

c) 12

d) 20

⇒ (3/4)x=(1/6)x+7

⇒ (3/4)x-(1/6)x =7

⇒ (9x-2x)/12 =7

⇒(7/12)x =7 . Therefore x=12.

Now 5/3 of x =(5/3)*12 =20

b) 15

c) 45

d) 12

Ratio Now , B

⇒ B/A =5/4.

Squaring both sides , we get

⇒B

Both sides subtract 1

=⇒(B

⇒81/A

⇒ A

b) 80

c) 40

d) 100

b) Rs. 3150

c) Rs. 800

d) Rs. 1000

b) 60

c) 45

d) 90

Their LCM = 3*4*x =12x.

Therefore 12x=180 =⇒

x=180/12 =15.

Second number=4x = 4*15=60.

b) 13:11 = 5:4

c) 30:45 = 13:24

d) 3:5 = 2:5

⇒12*12=9*16

⇒ 144=144

b) 5, 10, 15

c) 4, 8, 12

d) 10, 20, 30